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Two lossless X-band horn antennas are separated by a distance of $200 \lambda$. The amplitude reflection coefficients at the terminals of the transmitting and receiving antennas are $0.15$ and $0.18$,respectively. The maximum directives of the transmitting and receiving antennas (over the isotropic antenna) are $18$ dB and $22$ dB, respectively. Assuming that the input power in the lossless transmission line connected to the antenna is $2$ W, and that the antennas are perfectly aligned and polarization matched, the power ( in mW) delivered to the load at the receiver is _________
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